Index: src/ResolvExpr/typeops.h
===================================================================
--- src/ResolvExpr/typeops.h	(revision 5bf397625eb02d50425ba6f01ab313629b305e1c)
+++ src/ResolvExpr/typeops.h	(revision a0d1f1ce155bc63aec8f199d55f9adb9caf34d42)
@@ -18,13 +18,5 @@
 #include <vector>
 
-#include "Cost.h"
-#include "TypeEnvironment.h"
-#include "WidenMode.h"
-#include "AST/Fwd.hpp"
-#include "AST/Node.hpp"
-#include "AST/SymbolTable.hpp"
 #include "AST/Type.hpp"
-#include "AST/TypeEnvironment.hpp"
-#include "SynTree/SynTree.h"
 #include "SynTree/Type.h"
 
@@ -34,4 +26,6 @@
 
 namespace ResolvExpr {
+	class TypeEnvironment;
+
 	// combos: takes a list of sets and returns a set of lists representing every possible way of forming a list by
 	// picking one element out of each set